Can a family member be called as a character witness against another family member?
You can be called but the courts usually take into account that you are a family member. For instance, if you say, yes he has been violent, but I love him, they look at the context of it being family. If you don’t want to testify, they can say you are a hostile witness and the courts can order you to testify. Good luck, it sounds like a bad situation and you have my prayers.